Conflict when running bdist_wheel

[casellimarco]

With the new release 0.11.0 there is an issue when trying to create a package by running:
python setup.py bdist_wheel
we got this error:

  File "setup.py", line 33, in <module>
    'hdbscan', 'oni-analysis~=3.1'],
  File "/home/********/repo/venv/lib/python3.6/site-packages/setuptools/__init__.py", line 140, in setup
    return distutils.core.setup(**attrs)
  File "/usr/local/lib/python3.6/distutils/core.py", line 148, in setup
    dist.run_commands()
  File "/usr/local/lib/python3.6/distutils/dist.py", line 955, in run_commands
    self.run_command(cmd)
  File "/usr/local/lib/python3.6/distutils/dist.py", line 974, in run_command
    cmd_obj.run()
  File "/home/********/repo/venv/lib/python3.6/site-packages/wheel/bdist_wheel.py", line 259, in run
    self.run_command('install')
  File "/usr/local/lib/python3.6/distutils/cmd.py", line 313, in run_command
    self.distribution.run_command(command)
  File "/usr/local/lib/python3.6/distutils/dist.py", line 974, in run_command
    cmd_obj.run()
  File "/usr/local/lib/python3.6/distutils/command/install.py", line 557, in run
    self.run_command(cmd_name)
  File "/usr/local/lib/python3.6/distutils/cmd.py", line 313, in run_command
    self.distribution.run_command(command)
  File "/usr/local/lib/python3.6/distutils/dist.py", line 974, in run_command
    cmd_obj.run()
  File "/home/********/repo/venv/lib/python3.6/site-packages/setuptools/command/install_lib.py", line 12, in run
    outfiles = self.install()
  File "/usr/local/lib/python3.6/distutils/command/install_lib.py", line 111, in install
    outfiles = self.copy_tree(self.build_dir, self.install_dir)
  File "/home/********/repo/venv/lib/python3.6/site-packages/setuptools/command/install_lib.py", line 91, in copy_tree
    exclude = self.get_exclusions()
  File "/home/********/repo/venv/lib/python3.6/site-packages/setuptools/command/install_lib.py", line 24, in get_exclusions
    for ns_pkg in self._get_SVEM_NSPs()
  File "/home/********/repo/venv/lib/python3.6/site-packages/setuptools/command/install_lib.py", line 61, in _get_SVEM_NSPs
    svem = install_cmd.single_version_externally_managed
  File "/usr/local/lib/python3.6/distutils/cmd.py", line 103, in __getattr__
    raise AttributeError(attr)
AttributeError: single_version_externally_managed

Rolling back to 0.10.6 solved the issue.

[davidhewitt]

Thanks for reporting, are you able to provide an example repository which demonstrates this issue?

[casellimarco]

It happened locally and on circleCi on several private repositories, sorry I cannot share them.

[casellimarco]

We tested it against several versions of setuptools

[davidhewitt]

Understood. Are you willing to provide a minimal reproduction which does not expose your private content?

[davidhewitt]

A quick follow up - I tested locally with the setuptools-rust examples and cannot reproduce this issue. Without a reproduction I'm afraid we will not be able to fix.

[casellimarco]

It took me a while to reproduce it, it was really unclear the source of the issue.
It seems it is due to having nested namespaces.
Here you can have a play, there is bash script that will reproduce the error
https://github.com/casellimarco/dummy_setuptool_rust

[davidhewitt]

🚀 many thanks - I'll see if I can debug tomorrow!

[davidhewitt]

@casellimarco I've release setuptools-rust==0.11.2b0 - can you please retry your CI with this version and confirm if it works? If so, then I will release 0.11.2.

[casellimarco]

Amazing, tested and it works fine! Many thanks, glad to see such a small diff to fix it =)